Common oral cavity diseases such as caries and periodontal diseases are mostly slow-onset. In the early stage, there is no obvious symptom, and it is not easy to self-awareness, but when there is pain and other uncomfortable symptoms, it may have developed to the middle and late stage of the disease, which is more complicated to treat, and the patient will suffer more pain and spend more money, and the treatment effect may not be very satisfactory. Regular oral health checkups can detect oral diseases early and treat them in time. Pregnant women’s oral health is not only related to the health of the pregnant woman herself, but also closely related to the growth and development of the fetus. The pain and discomfort caused by oral diseases during pregnancy can affect the pregnant woman’s eating and lead to nutritional disorders in mild cases, and in severe cases, oral inflammation can spread throughout the body and affect the fetus, increasing the risk of fetal miscarriage or premature birth, and even lead to fetal malformation. Therefore, women should take the initiative to receive oral health examination when they plan to get pregnant, so as to find and deal with oral diseases or hidden problems in time, and not to get pregnant with oral diseases.